Master Seals are a Promotional Item in Fire Emblem Engage that players can use to promote a character from a Base Class to an Advanced Class. This unit enhancement mechanic becomes available once the unit in question has reached Level 10 or higher. Accordingly, players will need to utilize their units often to quickly meet the level requirement for using Seals for Class promotions. However, newcomers should be careful not to confuse Master Seals with Second Seals, another Promotional Item that does not upgrade units to their Advanced Classes. Instead, the utility of Second Seals is “reclassing” characters, allowing players to change a unit’s Base Class to another.
While Master Seals can be acquired at specific points throughout the story of Fire Emblem Engage, the primary source of this Promotional Item type is through the Item Shop. After completing Chapter 4: A Land in Bloom, adventurers will gain access to the Item Shop, which can be found in the southwestern corner of the central Plaza in the Somniel. Players can sell or purchase useful items, such as Vulneraries, Tonics, Elixirs, Gifts for characters, or ingredients for cooking.
Initially, Master Seals will not be available at the Item Shop of the Somniel in Fire Emblem Engage. However, YouTuber Unpunk 4K claims that after players progress the story from Chapter 8: The Kingdom of Might to Chapter 9: A Clash of Forces, the Promotional Item for Advanced Classes will be added to the store. One Master Seal will set adventurers back 2,500 Gold, which can be a hefty price for those lacking the funds. Nevertheless, the investment to unlock a unit’s Advanced Class is well worth the money, especially if players plan to use a particular character throughout the entire main campaign.
According to sources at Sportskeeda, the number of purchasable Master Seals at the Item Shop is initially limited; however, the store will restock on Seals after reaching specific Chapters. More specifically, players can buy more Master Seals at the Item Shop in Chapter 13 and Chapter 17. After reaching Chapter 18 and onward, the purchase restriction for Master Seals will be lifted, and players can buy as many as they please if they have the funds. Besides the Item Shop, below is a list of additional sources for procuring Master Seals in Fire Emblem Engage:
More: Fire Emblem Engage: Amiibo Guide (Compatibility & Rewards)
Source: YouTube/Unpunk 4K | Sportskeeda